ddeml: More calling convention fixes

[Dmitry Timoshkov]

Tristan Schmelcher <tristan_schmelcher at alumni.uwaterloo.ca> wrote:

> I think CBR_BLOCK is only for values of type HDDEDATA. The cbData
> value here is a DWORD (specifying a length). (DWORD)-1 seems to be the
> preferred way of checking this condition in the existing code, e.g.
> see dlls/user32/dde_client.c lines 637, 648, etc.

You are right.

-- 
Dmitry.